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tools: adapt frr-llvm-cg to xref changes

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These caused some function names to change, which frr-llvm-cg looks at
in order to improve callgraph accuracy.

Signed-off-by: David Lamparter <equinox@diac24.net>
This commit is contained in:
David Lamparter 2021-03-23 20:17:55 +01:00
parent a077ec8620
commit 49fc8264e9
1 changed files with 7 additions and 7 deletions
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14
tools/frr-llvm-cg.c
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@ -197,7 +197,7 @@ static void walk_const_fptrs(struct json_object *js_call, LLVMValueRef value,
#ifdef FRR_SPECIFIC #ifdef FRR_SPECIFIC
static bool is_thread_sched(const char *name, size_t len) static bool is_thread_sched(const char *name, size_t len)
{ {
#define thread_prefix "funcname_" #define thread_prefix "_"
static const char *const names[] = { static const char *const names[] = {
thread_prefix "thread_add_read_write", thread_prefix "thread_add_read_write",
thread_prefix "thread_add_timer", thread_prefix "thread_add_timer",
@ -227,6 +227,9 @@ static void process_call(struct json_object *js_calls,
LLVMValueRef called = LLVMGetCalledValue(instr); LLVMValueRef called = LLVMGetCalledValue(instr);
if (LLVMIsAInlineAsm(called))
return;
if (LLVMIsAConstantExpr(called)) { if (LLVMIsAConstantExpr(called)) {
LLVMOpcode opcode = LLVMGetConstOpcode(called); LLVMOpcode opcode = LLVMGetConstOpcode(called);
@ -324,12 +327,12 @@ static void process_call(struct json_object *js_calls,
prefix); prefix);
} else { } else {
char *dump = LLVMPrintValueToString(called); char *dump = LLVMPrintValueToString(called);
printf("\t%s\n", dump); fprintf(stderr, "%s: ??? %s\n", prefix, dump);
LLVMDisposeMessage(dump); LLVMDisposeMessage(dump);
} }
return; return;
#ifdef FRR_SPECIFIC #ifdef FRR_SPECIFIC
} else if (!strcmp(called_name, "install_element")) { } else if (!strcmp(called_name, "_install_element")) {
called_type = FN_INSTALL_ELEMENT; called_type = FN_INSTALL_ELEMENT;
LLVMValueRef param0 = LLVMGetOperand(instr, 0); LLVMValueRef param0 = LLVMGetOperand(instr, 0);
@ -380,10 +383,7 @@ static void process_call(struct json_object *js_calls,
json_object_new_string_len(called_name, called_len)); json_object_new_string_len(called_name, called_len));
LLVMValueRef fparam; LLVMValueRef fparam;
if (strstr(called_name, "_read_")) fparam = LLVMGetOperand(instr, 2);
fparam = LLVMGetOperand(instr, 2);
else
fparam = LLVMGetOperand(instr, 1);
assert(fparam); assert(fparam);
size_t target_len = 0; size_t target_len = 0;